Cleaning Aquariums With Bleach

[andrewmoquin]

On occasions where a complete cleaning is required, such as a change from saltwater to freshwater or after prolonged storage, the use of chlorine bleach can be very effective. A half gallon of bleach mixed with 20 gallons of water or more is great for sterilization and is perfectly safe for acrylic.

[mgamer20o0]

yep you just have to wash it out really well then use extra amount of prime or what ever conditioner you use. it breaks down the bleach.

[Innovator]

There is no need to bleach if switching between fw and sw unless the tank is absolutely filthy; however, use Clorox and to break down the bleach you can purchase sts (sodium thiosulfate) crystals.